| Methodology: |
Cytochemical Stain
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| Performed: |
Mon-Fri
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| Reported: |
1-5 days
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| Specimen Required: |
Collect: Lavender (EDTA) or green (sodium or lithium heparin). OR heparinized bone marrow aspirate. OR paraffin slides/tissue block.
Specimen Preparation: Blood: Protect from light. Transport 5 mL whole blood AND 6 unfixed, air-dried, and unstained push smears made from the blood submitted. (Min: 1 mL AND 6 unfixed smears).
OR Bone Marrow: Protect from light. Transport 1 mL heparinized aspirate AND 6 unfixed, air-dried, and unstained bone marrow aspirate smears. (Min: 0.5 mL AND 6 unfixed smears).
OR Paraffin: Transport tissue block or 4 unstained (4-micron thick sections), in a tissue transport kit (ARUP supply #47808). Available online through eSupply using ARUP ConnectTM or contact ARUP Client Services at (800) 522-2787. (Min: 4 slides) Protect paraffin block and/or slides from excessive heat.
Storage/Transport Temperature: Blood and Bone Marrow: Room temperature. Specimens should be received within 24 hours of collection; testing must be performed within 48 hours of collection.
Paraffin: Room temperature. Blocks and slides must be protected from excessive heat. Ship in cooled containers during summer months.
Unacceptable Conditions: Frozen specimens. Peripheral blood smears older than one year. Anticoagulated blood or bone marrow sent without well-prepared unfixed smears older than 48 hours.
Stability (collection to initiation of testing): Blood and Bone marrow: Ambient: 48 hours; Refrigerated: Unacceptable; Frozen: Unacceptable
Paraffin: Ambient: Indefinitely; Refrigerated: Indefinitely; Frozen: Unacceptable
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